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-  2015 

siRNA抑制eIF4E基因的表达对卵巢癌A2780细胞生物学行为的影响 Effect of eIF4E Gene Inhibition by RNAi on the Biological Behaviors of Ovarian Cancer A2780 in Vitro

Keywords: 卵巢癌,eIF4E基因,siRNA,侵袭,顺铂

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Abstract:

目的:探讨真核细胞翻译起始因子4E(eIF4E)基因在卵巢癌细胞生长增殖、迁移侵袭以及对顺铂敏感性中的作用。方法:采用eIF4E基因的特异shRNA表达质粒转染卵巢癌A2780细胞,通过siRNA抑制eIF4E的表达,采用real time-PCR和Western印迹法检测siRNA对eIF4EmRNA和蛋白表达水平的抑制作用,优化转染作用条件。进而分析eIF4E敲降后,A2780细胞生物学行为的变化。结果:特定的siRNA对eIF4E基因的表达有显著的抑制作用;eIF4E敲降后,与对照组比较,A2780细胞的增殖明显受到抑制(P<0.05),对顺铂的敏感性明显增强;细胞划痕实验和Transwell侵袭实验发现A2780细胞的运动侵袭能力显著下降(P<0.05);细胞周期分析发现A2780细胞S期细胞比例略有下降,G1期细胞比例略有上升,但无统计学意义(P>0.05)。结论:抑制eIF4E基因的表达,可以显著抑制卵巢癌细胞增殖、抑制细胞的迁移侵袭能力,增强细胞对顺铂敏感性。上述结果为卵巢癌的分子机制及顺铂敏感性的研究提供了新依据;也为卵巢癌的临床治疗提供了新靶点基因

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